STD 7 SCIENCE TEST 1

1.Which ofthe following is a physical change in boys only during adolescence?

2. Which of the following statement is not correct when handling chemicals at home?

3.Animals should be fed with a balanced diet for the following reasons except?

4.The following are characteristics of blood vessels.

(i) Have thick elastic and muscular walls.

(ii)Have valves to prevent back flow of blood.

(iii)They are located deep in the body.
(iv)They are located close to the surface of the body.

Which characteristics applies to vessel number only?

5.Waceke was bitten by a snake. Which vessel carried the poison to the heart?

6.Venus flytrap, cobra lilly, sundew and bladder wort

7.Kipngetich collected the following materials to construct a certain weather instrument.

 (i) a strong polythene

(ii) a strong string
(iii) wire

(iv) a long pole

Which weather instrument did he intend to construct?

8.Kipngetich collected the following materials to construct a certain weather instrument.

 (i) a strong polythene

(ii) a strong string
(iii) wire

(iv) a long pole

Which weather instrument did he intend to construct?

9.For tools to last longer and work property, they should not be

10.Onyango a class seven boy had the following symptoms.

(i) Lack of sleep

(ii) Loss of appetite
(iii) Hallucinations.

(iv) Brain damage

Which drug could he have taken?

11.Which one of the following-crop pest is CORRECTLY matched to then it causes?

12.Which one of the following livestock parasites cannot be controlled by spraying animal?

13.Merl a class seven pupil was takent0 hospital with the following symptoms. – –

(i) Skin rash               (ii) Fever

(iii) Diarrhoea         (iv) Blood in urine and stool

She was likely suffering from?

14.A common inhalant that is used by street boys is

15.Whales, bats,duck and billed platypus belong to a
group of animals called

16. The importance or fibre in the filllet is to

17.Simsim, coconut and sunflower are examples of crops.

18. Which method of controlling weeds pollutes the environment?

19. Maina saw clouds that had, flat base and were made up of rounded masses these clouds indicated.

20.Decaying bodies of animals and plants

21…………plants use nitrogen in the air to make protein?

22.The part of a flower that consists of the stigma style and ovary is called?

23.Which disease are immunised at birth?

24.Which of the following human activities increases soil erosion?

25.Grasses and legumes that animals feed on directly`in the field are examples of?

26.The following are modern methods of preserving food EXCEPT?

27.When a coin is placed in a basisn of water it appears to be raised because of

28.In the human breathing system the hair that traps dust is found in the

29.The sandy soil has_

30.Force is expressed in

31.The following are plant nutrients. Which one is a micro nutrient?

32.Harvested rain water can be stored in

33.A false idea or a story many people believe to be
true is called

34.The following are ways in which HIV AIDS is spread EXCEPT?

35.Wanjeri’s sister had soft, weak bones and bow shaped legs. She should be fed on diet rich in

36.Oxygen is added to the blood in the